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- W2014914692 abstract "The hyperfine magnetic fields and quadrupole interactions in ${mathrm{Fe}}_{2}$B and ${mathrm{Fe}}_{2}$Zr are explored by nuclear magnetic resonance and the Mossbauer effect. The anisotropy found in the ${mathrm{Fe}}_{2}$B Mossbauer spectra can be interpreted as a superposition of hyperfine patterns arising from an anisotropic magnetic field and electric field gradient in combination with either two magnetically inequivalent Fe sites (such as was observed in ${mathrm{Fe}}_{2}$Zr) or a two-dimensional distribution of magnetization directions. Assuming the former, the two magnetic fields are found to be 252ifmmodepmelsetextpmfi{}2 and 244ifmmodepmelsetextpmfi{}2 dT at $T=4.2$ K. The B resonance frequency in ${mathrm{Fe}}_{2}$B shows a ${T}^{frac{3}{2}}$ dependence with some low-temperature deviations which can be understood in terms of a gap arising from magnetocrystalline anisotropy and spin-wave demagnetization. We have extracted the constants of proportionality in the spin-wave approximation, $C$ (the coefficient of the ${T}^{frac{3}{2}}$ term) and $D$ (the coefficient of the ${T}^{frac{5}{2}}$ term). We find that $frac{D}{C}=(1.0ifmmodepmelsetextpmfi{}0.4)ifmmodetimeselsetexttimesfi{}{10}^{ensuremath{-}3}$ and that the gap temperature ${T}_{g}ensuremath{le}1$ K. The measured pressure variations $frac{ensuremath{partial}ensuremath{nu}}{ensuremath{partial}P}$ of the $^{11}mathrm{B}$ and $^{91}mathrm{Zr}$ frequencies are, respectively, -21ifmmodepmelsetextpmfi{}2 and 31ifmmodepmelsetextpmfi{}2 Hz ${mathrm{bar}}^{ensuremath{-}1}$." @default.
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- W2014914692 title "Resonance Studies in Ferromagnetic<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Fe</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>B and<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Fe</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>Zr" @default.
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- W2014914692 doi "https://doi.org/10.1103/physrev.177.465" @default.
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